where \(T\)  is the absolute temperature and \(U\)  is the internal energy controlled by the interatomic interactions. Following a classical approach in rubber elasticity, here the contribution of internal energy in the free energy landscape is ignored. The rupture of strands, however, is essentially controlled by the nature of this interatomic potential, as described later. Thus [1]}
\(w(\lambda ,j)=jk_{B}T\bigg (\frac{\lambda }{\sqrt{j}}\beta +\ln \frac{\beta }{\sinh \beta } \bigg )+w_{0}\) 
